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CHEMISTRY P2 - ANALYSIS & THE EARTH'S RESOURCES > ANALYSING CHROMATOGRAPHS [C12.2] > Flashcards

ANALYSING CHROMATOGRAPHS [C12.2] Flashcards

[C12.2]

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1
Q

MOBILE PHASE

A

solvent (eg; water)

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2
Q

STATIONARY PHASE

A

chromatography paper due to CAPILLARY ACTION

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3
Q

CAPILLARY ACTION

A

pulls substances in the mixture upwards; lighter particles move further up the stationary phase

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4
Q

starting line drawn in? why?

A

drawn in pencil ABOVE WATER LINE so it WON’T MOVE

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5
Q

Rf value?

A

Rf value - distance substance moved/distance mobile phase moved

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CHEMISTRY P2 - ANALYSIS & THE EARTH'S RESOURCES (7 decks)

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